Funding for this research was provided by:
Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow (PGI/DIR/RC/717/2011)
Article History
Received: 4 October 2017
Accepted: 23 January 2018
First Online: 20 February 2018
Compliance with ethical standards
:
: All authors have no conflicts of interest.
: The studies have been approved by the appropriate institutional and/or national research ethics committee and have been performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.